Which of the following compound has the smallest bond angle (XAZ) in each series respectively?

(A) OSF2         OSCI2             OSBr2

(B) SbCI3     SbBr3              SbI3

(C) PI3         AsI3                  SbI3

Options are as follows: 

(a) OSF2, SbCI3 and PI3    (b) OSBr2, SBI3 and PI3

(c) OSF2, SBI3 and PI3        (d) OSF2, SBCI3 and SBI3

Concept Questions :-

Hybridisation
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Which species has the same shape as NH3

(a) SO32-

(b) CO32-

(c) NO3-

(d) SO3

Concept Questions :-

Hybridisation
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According to VSEPR theory in, which species do all the atoms lie in the same plane?

1. CH3+                                   2. CH3-

(a) 1 only                                (b) 2 only 

(c) both 1 and 2                      (d) neither 1 nor 2

Concept Questions :-

Hybridisation
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Idetify the correct sequence of increasing number of π bonds in the structure of the following molecules :

(I) H2S2O6     (II) H2S2O3   (III)  H2S2O5

(a) I II and III         (b) II I and III

(c) II III and I         (d) I III and II

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The state of hybridisation of central atom in dimer of BH3 and BeH2 is:

(a) sp2,sp2    (b) sp3,sp2  (c) sp3,sp3  (d) sp2,sp3

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Which of the following species/molecules does not have same number of bond pairs and lone pairs?

(a) OCN- 

(b) H2O

(c) C2H2Cl2

(d) O3

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O2F2 is an unstable yellow orange solid and H2O2 is a colourless liquid both have OO bond and 

OO bond length in  H2O2 and O2F2 respectively is:

(a) 1.22 A, 1.48               (b) 1.48 A, 1.22A 

(c) 1.22 A, 1.22A             (d) 1.48 A, 1.48A

Concept Questions :-

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The bond length of the SO bond in maximum in which of the following compounds?

(a)  SOCI2 

(b) SOBr2 

(c)SOF2 

(d) All have the same length

Concept Questions :-

Covalent Bonding
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Out of the two compounds shown below, the vapour pressure of B at a particular tempreture is expected to be :

                                       and

                                                   (A)                                  (B)

(a) Highr than that of A

(b) Lower than that of A

(c) same as that of A 

(d) can be higher or lower depending upon the size of the vessel 

Concept Questions :-

Hydrogen Bonding
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solubillity of alkali metal fluorides increases down the group select correct explanation for given statement :

(a) Hydration energy increase and lattice energy decrease down the group 

(b) both energy decrease down the group but decrease in hyderation energy is rapid

(c) both energy decrease down the group but decrease in lattice energy is rapid 

(d) both energy decrease down the group but increase in hyderation energy is rapid

Concept Questions :-

Lattice/Hydration Energy
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